ARG NGINX_TMP_INSTALL_DIR=/tmp/nginx-rtmp

FROM alpine:latest as builder

ARG NGINX_TMP_INSTALL_DIR
ENV NGINX_VERSION=1.18.0
ENV NGINX_RTMP_MODULE_COMMIT=23ec4ce2d769830124abf3be1353dd9b105ab09c

# Install dependencies
RUN apk --update-cache add build-base openssl-dev pcre-dev zlib-dev

# Download and extract nginx source
RUN mkdir -p /tmp/build/nginx && \
    cd /tmp/build/nginx && \
    wget -O nginx.tar.gz https://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz && \
    tar -zxf nginx.tar.gz

# Download and extract RTMP module source
RUN mkdir -p /tmp/build/nginx-rtmp-module && \
    cd /tmp/build/nginx-rtmp-module && \
    wget -O module.zip https://github.com/sergey-dryabzhinsky/nginx-rtmp-module/archive/${NGINX_RTMP_MODULE_COMMIT}.zip && \
    unzip module.zip

# Build and install nginx in a specific directory in order to isolate it for later copy
RUN cd /tmp/build/nginx/nginx-${NGINX_VERSION} && \
    ./configure \
        --sbin-path=/usr/local/sbin/nginx \
        --pid-path=/var/run/nginx.pid \
        --lock-path=/var/lock/nginx.lock \
        --error-log-path=/var/log/nginx/error.log \
        --http-log-path=/var/log/nginx/access.log \
        --http-client-body-temp-path=/tmp/nginx-client-body \
        --with-http_ssl_module \
        --with-threads \
        --add-module=/tmp/build/nginx-rtmp-module/nginx-rtmp-module-${NGINX_RTMP_MODULE_COMMIT} && \
    make -j$(nproc) && \
    make DESTDIR=${NGINX_TMP_INSTALL_DIR} install

# Replace default with custom config
COPY nginx.conf ${NGINX_TMP_INSTALL_DIR}/usr/local/nginx/conf/nginx.conf


FROM alpine:latest

ARG NGINX_TMP_INSTALL_DIR

RUN apk --no-cache add libssl1.1 pcre zlib

# Copy installed nginx from previous stage
COPY --from=builder ${NGINX_TMP_INSTALL_DIR} /

CMD ["nginx", "-g", "daemon off;"]